13721015

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{227}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 20749824

約数和(自身を除く): 7028809

約数列:

[1, 5, 7, 11, 35, 55, 77, 157, 227, 385, 785, 1099, 1135, 1589, 1727, 2497, 5495, 7945, 8635, 12089, 12485, 17479, 35639, 60445, 87395, 178195, 249473, 392029, 1247365, 1960145, 2744203, 13721015]

約数ペア:

[(1, 13721015), (5, 2744203), (7, 1960145), (11, 1247365), (35, 392029), (55, 249473), (77, 178195), (157, 87395), (227, 60445), (385, 35639), (785, 17479), (1099, 12485), (1135, 12089), (1589, 8635), (1727, 7945), (2497, 5495)]